Assessing the effect of composite formulation on polymerization stress
Assessing the effect of composite formulation on polymerization stress
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DOI：
10.14219/jada.archive.2000.0207
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发表时间：
2000-04-01
影响因子：
3.9
通讯作者：
Ferracane, JL
中科院分区：
文献类型：
--
作者：
Condon, JR;Ferracane, JL
背景在这项研究中，作者测量了各种牙科复合材料的聚合应力的大小，并探讨了一种新型单体，苯乙烯-烯丙醇的甲基丙烯酸酯衍生物或MSAA在降低聚合应力方面的作用。在机械测试机中评估11种市售复合材料和一系列实验复合材料，以测量在放置在一个可移动的支架中期间产生的最大应力。结果，在商业材料中，发现较高的填料体积和增加的聚合应力之间存在显著关系。MSAA的引入使实验复合材料的聚合应力降低了30%。含有较低水平的无机填料颗粒的复合材料不太可能在放置期间产生高水平的聚合应力。对传统复合材料化学性质的改进可以使材料产生更低的聚合应力水平。临床意义：牙科复合材料在光固化过程中产生的聚合应力是导致粘接剂粘接失效的主要原因，导致术后敏感、边缘染色和复发性龋。
Background. In this study, the authors measured the magnitude of the polymerization stress of a variety of dental composite materials and explored the effect of a novel monomer, a methacrylated derivative of styrene-allyl alcohol, or MSAA, in reducing polymerization stress.Methods, Eleven commercially available composites and a series of experimental composites were evaluated in a mechanical testing machine to measure the maximum stress generated during placement in a confined setting.Results, A significant relationship between higher filler volume and increased polymerization stress was found among the commercial materials. Introduction of MSAA produced a 30 percent reduction in polymerization stress in an experimental composite material.Conclusions. Composites that contain lower levels of inorganic filler particles are less likely to produce high levels of polymerization stress during placement. Modifications to traditional composite chemistry can result in materials that produce lower polymerization stress levels.Clinical Implications, The polymerization stress produced by dental composite materials during Light-curing is a leading reason for bond failures in adhesive restorations, resulting in postoperative sensitivity, marginal staining and recurrent caries.